U.S. stocks fell for the fourth straight session on Friday, leaving indexes with the biggest weekly losses in months. Over the past week, investors sold stocks as disappointing earnings results from companies such as Apple, -0.53% Caterpillar, -1.01% and IBM, -1.22% as well as a dramatic selloff in commodities, brought back concerns over a slowing growth in global economy.

The S&P 500 closed 22.50 points, or 1.1%, lower at 2,079.65, booking a 2.2% weekly loss. The weekly decline for the benchmark was the steepest since March. Among the S&P 500 sectors, materials stocks were hit the hardest, with the sector falling 5.5% over the week, while the energy sector booked a 4.1% loss. The Nasdaq Composite, -1.12% dropped 57.78 points, or 1.1%, to 5,088.63, ending the week with a 2.3% weekly loss. The tech-heavy index retreated from its record closing level set on Monday. The Dow Jones Industrial Average DJIA, -0.92% dropped 163.39 points, or 0.9%, to 17,568.53, recording a 2.9% weekly loss.

Overall the Visual Marketplace declined again for another day of losses, finishing the day down 2.56 points, to finish at 271.91